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posted on 2012/08/13 06:59:57 PM CEST
Hi to all,
I need to control water boiler over touch GLCD 128x64 and 1-Wire DS18B20 sensors, using PIC18F45K22 (EasyPIC v7 dev board).
Scenario:
- Boiler have 80L (vertical)
- Temp measurement is done over 5 DS18B20, for sensing level and amount of hot water on 5 boiler points (1 bottom--2-- 3 middle--4--5 top)
- On GLCD user set temp on one of 5 sensors, uC monitor value of that particular sensor and like thermostat over DS2406 switch of or on relay to turn off or on heater element inside boiler.
- On GLCD user can monitor curve of water temp raising in boiler, or with graphical boiler on GLCD with raising filling white filled area representing raising of hot water level.
- Manually control Off & On heater element should exist.
This device can be used from main room, to control water boiler in remote bathroom over 1-wire.
